Operating lamp



June 19, 1934. A F plEPER 1,963,279

' OPERATING LAMP Filed March 1'7, 1933 2 Sheets-Sheet l INVENTORifvkorzse ZPicper %zls A TTORNEY June 19, 1934. PlEPER 1,963,279

OPERATING LAMP Filed March 1'7, 1935 2 Sheets-Sheet 2 IN'VENTOR B Y Iflhizsei f ze r '%2LSA TTORNE y 55..lanip.

Patented June 19, 1934 "1 UNITED *T-ZSTATES PATENT OFFICE OPERATING LAMPAlphonse F. Pieper, Rochester, N. Y.

Application March 17, 1933, Serial No.'661,301 V 20 Claims. (01.240-4115) I I 'The present invention relates to light projectapparatussuch, for example, as that employed ii-n the performance of dental orsurgical work and has for its object to'provide an improved operat- 75ing lamp designed to effectively illuminate the parts to be treated oroperated upon and constructed in a manner whereby it can be convenientlyadjusted to different operating positions will respect to the patient.

A further object of the invention is to provide improved means by whichto control and effectively increase the extent or degree of illuminationin lamps of this class without increasing the cost of operating thesame. f A further object of the invention is to provide an improvedoperating lamp designed to illaminate the various parts or objects to beinspected, treated, or operated upon, and one which is particularlyuseful in the practice of dentistry Where it is desired to illuminatethe oral cavity during treatment of the teeth or in the performance ofsurgical operations and which is designed to focus the light on the workwith a high'degree of efliciency.

A further object of the invention is to provide in a dental or surgicaloperating lamp a combined reflector and light transmitting element, thereflector being arranged to receive certain of therays of the lightsource and adapted to project them in advance of the light transmittingelement outside and independently thereof or Without passagetherethrough. 4 N

- A further object of the invention is to provide in combination with alight projecting lamp for use in the performance of dental, surgical, or

other kinds of work, a combined reflector and.

light control element, such for example as an eye shield for protectingthe patient and the operator from the glare of the light. I e A furtherobject of the invention is to provide a lamp having an adjustableelement thereonprovided-with means adapted to support different objectsor articles for illumination by the lamp such, for' example, as a datasheet, or a film or '45? part to be treated in order that it may bereadily inspected and viewed by the operator.

A further object of the invention is to provide in a lamp of the classdescribed, a casing or other jsuitab1e supporting means for the lightsource havinga reflector adjustable thereon, as for ex-- ample byrotation, and adapted to support light control means or otherserviceable parts or devices which it may be desired to userwith thetranslucent element containing an image of the To these and other endsthe invention resides in certain improvements and combinations of parts,all as will'be hereinafter more fully de-' scribed, the novel featuresbeing pointed'out in the claims at the end of the specification.

In the drawings: 3 Fig. 1 is a view in elevation of a lamp embodying oneform of the invention; .j Fig. 2 is a front elevation of the sa'me Fig.3 is a sectional View illustrating the re- '5 flector, the eye shieldthereon and the means for supporting the data sheets to be illuminatedby the lamp; I I 1 Fig. 4 is a sectional elevation taken longitudinallyof the lamp and drawn to an enlarged 7'0 scale;

Fig. 5 is a fragmentary section taken on line 5*5 of Fig. 4; r v Fig. 6is a fragmentary view looking at the front of the reflector and showing'oneof-the 7-5 parts projecting therethrough for supporting the lightcontrol or transmitting element; V Fig. 7 Ba sectional View taken online'lt-fl of Fig. 6, and v a.

Fig. 8 is a sectional elevation taken on line so; 8=8 of Fig. 6. r

The same reference numerals throughout the, several views indicate thesame parts. Referring to the drawings, suitable supporting means for thelight source is provided which is preferably in the form of a housingcreasing 10 having atubular supporting element. 11' at the outer end ofwhich is a ball and socket. joint," the socket being-formed in thetubular element and receiving the ball portion 12 of the joint which isformed on the end of the tubular. support 13 thus permitting the lamp tohave universal movement to facilitate proper adjustment of the same todifferent service positions;. The support is adapted to be carried bysuit-.95? able means, not shown, such, for examplaasthe counterbalancemechanism shown rin' myi pending application, Serial No. 645,079, filedNovember 30, 1933, inwhich the lamp is mounted for movement verticallyand horizontally desired position with respect to thepatient.

Mounted within the housing 10 is an open", ended lamp socket receivingmember 14,. which is spaced from the wall of the housing to aiford anannular air circulating passage 15. Cirou 105' lation of the air throughthe passage 15' isjin'} sured by providing the openings. 16 and l'li in"the front and rear ends of the housing wall. By v circulating air,through said passage," the hous} ing 10, the member 14 therein," andtheflamp' 11.0

to a y a; plurality of supporting ing and are prevented from socket 18are prevented from becoming heated to any great extent. The member 14also serves to prevent the escape of light from the housing through theopenings 16 in the latter, said member being held within the housing bythe parts 19 which are connected with the housing by means of the screws20.

The lamp 21 is screwed into the socket 18 which is carried by a belt .orrod 22 having a head 23 between which and the socket is a suitableconnection 24. The bolt extends through a sleeve 25, the outer end ofwhich is flared at 26 and seated upon the inner face of the end wall 27of the housing 10. The bolt or that part thereof which extends throughthe wall 2'7 is preferably made polygonal in cross section and theopening in said wall through which the bolt extends is correspondinglyshaped whereby the bolt is held against turning when the clamping screw28 is screwed into position to secure the lamp Operating handle 29 uponthe rear wall of the housing, the handle being recessed at 30 to receivethe outer end of the bolt as shown in Fig. 4. It will be understood thatin tightening up 'the screw 28 that the head 23 of the bolt will beurged into engagement with the sleeve 25 which is thus clam ed upon thehousing wall 27 whereby the lamp and lamp socket are rigidly held inposition within the housing.

By means of the handle 29, the operator can readily swing the lamp tovarious angular positions upon the support 13 whereby to adjust it tothe different desired positions with respect to the patient.

The circuit wires 13a for supplying current to the lamp are preferablycarried through the tubular support 13 and through the supportingelement 11 thereon from which they are extended for connection with thelamp socket and with a switch indicated generally at 14a for controllingthe lamp circuit and having an operating portion 15a for opening andclosing the switch. The light projecting or reflecting means whichalsocarries the light control means for protecting the patients eyesfrom the glare of the light and the holding means for the data sheet aswell, is mounted on the housing 10 for rotation about the longitudinalaxis thereof as a unit. as best illustrated in Fig. 4. This means Icomprises a rotary supporting and light reflecting element 31 which isgenerally of dish-shaped construction and which has an annular andinwardly extending wall portion 32 intermediate its outer and innerlight reflecting surfaces 33 and 3,4. The central portion of thereflector is provided with an opening 35 through which the lamp 21extends as shown in Fig. 4.

The annular wall portion 32 of the light refleeting element is providedat its rear side with devices 36 having parts 3'7fthereon which areconnected with the reflector bymeans of the screws 38;. The supportingdevices are disposed within a channel-shaped guideway 33- formed on thefront end of the housmoving longitudinally of the housing by the, side.portions 331; and 39a of. the channel between which the supportingdevices are free to rotate around the of thehousing to. permit thevreflector elementto be rotated for a purpose described hereinafter.

l he portiQn, 38aof; the lamp, casing forms a seat for the curvedportion 32 of the reflector I element31 whereby a, closed joint isafforded between the reflector and the lamp casing, the portion 38a ofthe latter forming a bearing for the reflector which serves to supportand steady the reflector in its different positions of adjustment.

The supporting devices are provided with spring-like arms 40 whichextend forwardly of the reflector through suitable openings 40a, in thewall thereof, preferably formed in the annular wall portion 32 of thereflector. The ends of the arms are curved at 41 to receive thebead-like portion 42 of a light transmitting or control element 43 ofany suitable or preferred type. Thus an opening 44 is provided betweenthe reflector element and the light control element for the directpassage of certain of the rays of the lamp to the surface 33 of thereflector element for projection thereby outside and independently ofthe light control element without passage therethrough whereby .to moreeffectively illuminate the parts to be treated or operated upon. Inother words, the non-intercepted light rays are those projectedforwardly of the lamp by the reflecting surface 33 independently of thelight transmitting or control element 43. The reflecting surface 33 ispreferably so arranged as to: cause the rays projected thereby toconverge on. the longitudinal axis of the lamp at a-point well inadvance of the light source so that the lamp when being used may besupported at a suitable distance from the patient out of the way of theyoperator in order that he may conveniently perform the requiredtreatments or'operations.

In order to prevent accidental displacement of the spring-like arms 40for supporting the light control element said upon the lighttransmitting element by meansof a split ring 45 which engages theseveral arms. within the U-shaped ends 46 thereof, as shown detachableand in Fig. 4. The ring is, of course, the light transmitting or controlelement may also be detached by swinging the arms outward ly todisengage the same.

The light control means for protecting the eyes of the patient from theglare of'the light when under treatment, comprises a shield or visor 47extending in advance of and the bolts 48. The shield may be readilymoved to protecting position merely by rotating the reflector elementabout the longitudinal axis of the lamp, which can be done by employingthe fingers the finger-like portions are inserted the data sheets 54 asshown in Fig. 4. The datar'sheets' when thus supported by the clips areilluminated by the lamp and serve V or surgeon in determining thecondition and the particular location of the part to be treated or oerated upon. It will be understood that the arms are held inpositionsuitably secured upon the reflector element 31 as by means ofthe supporting devices for illumination thereby.

holder 51 provided with T40 extended finger-like portions 52 with whichare" associated the spring clips 53 between which and as a guide to thedentist" data sheets can be adjusted to different angular positions withrespect to the lamp by adjusting the holder 51 upon the lightcontrolling shield and that they may be supported in position to beilluminated by the lamp rays at the same time that the lamp is beingused to project the light into the oral cavity or to illuminate otherparts requiring examination or treatment.

It will be understood that the control element 43, which is preferablyof the light transmitting type, may be shaped or constructed in anydesired manner to operate either as a light focusing and projectingmeans or as means for diffusing the light or for varying the intensityof the same, depending on the nature of the work.

It will be further understood that by providing the opening 44 betweenthe reflector element 31 and the light control element 43 to permit ofthe passage of the light rays to the reflecting surface 33, that aflood-like effect is produced whereby the degree of illumination isincreased.

The reflector is preferably designed to cause the rays reflected therebyto converge on the 1ongitudinal axis of the lamp in order that the lightmay be better concentrated within the oral cavity or on the part to betreated or operated upon.

While it is preferred to mount the data sheet holder directly on thelight controlling shield 4'7 it will be understood that it may, ifpreferred, be connected with the reflector element 31 independently ofthe shield.

- I claim:

1. An operating lamp, comprising a casing, a light transmitting elementconnected with and supported in advance of the casing, means connectedwith the casing for supporting a light source in rear of the lighttransmitting element, a reflector element spaced from the lighttransmitting element and having a reflecting surface adapted to receivelight rays from said light source and to project them forwardly. of thecasing in advance of the light reflecting element and independentlythereof, and light control means secured uponthe reflector element, andextending in advance of the reflector and in spaced relation to thelight transmitting element.

2. An operating lamp, comprising a casing, a light transmitting elementconnected with and supported in advance of the casing, means connectedwith the casing for supporting a light source in rear of the lighttransmitting element, a reflector element spaced from the lighttransmitting element and having a reflecting surface adapted to receivelight rays from said light source and to project them forwardly of thecasing in advance of the light reflecting element outside andindependently thereof, and means connected with and extending in advanceof the reflector element adapted to support a data sheet in position tobe illuminated by the light rays emanating from said light source.

3. An operating lamp, comprising a casing, a light transmitting elementconnected with and supported in advance of the casing, means connectedwith the casing for supporting a light source in rear of the lighttransmitting element, a reflector element spaced from the lighttransmitting element and having a reflecting surface adapted to receivelight rays from said light source and to project them forwardly of theeasing in advance of the light reflecting element and independentlythereof, a visor connected with the reflector element and extending inadvance thereof in spaced relation to the light transmitting element,and supporting means for a data sheet secured upon the visor adapted tohold the sheet in position to be illuminated by the light rays emanatingfrom said light source.

4. An operating lamp, comprising means for supporting a light sourcehaving an annular bearing thereon, a light transmitting element inadvance of said bearing, a reflector rotatably seated on said bearing inrear of said light transmitting element, the reflector being adapted toreceive the rays from said light source and to project them forwardly ofthe light transmitting element and independently thereof, and lightcontrol means secured upon the reflector extending in advance thereofand rotatable therewith.

5. An operating lamp, comprising means for supporting a light sourcehaving thereon an annular bearing, a light transmitting element in ad-Vance of said bearing, a reflector rotatably seated on said bearing inrear of said light transmitting element, the reflector being adapted toreceive the rays from said light source and to project them forwardly ofthe light transmitting element and independently thereof, light controlmeans secured upon the reflector and rotatable therewith, and supportingmeans for the light transmitting element rotatable with the reflector.

6. An operating lamp, comprising a casing adapted to support a lightsource, a reflector movable upon the casing adapted for projecting thelight rays in advance thereof, an eye shield extending forwardly of thereflector movable therewith and relative to the light source, and aholder on the eye shield movable relative thereto adapted to support adata sheet for illumination by the light source.

7. An operating lamp, comprising a casing adapted to support a lightsource, a reflector element for reflecting the light rays in advance ofthe casing rotatable upon the casing around the axis of the projectedbeam, light control means on the reflector element rotatable therewith,and a data sheet holder adjustable upon the light control means towardand from the light source whereby illumination of the sheet is afforded.

8. An operating lamp, comprising a casing adapted to support a lightsource, a reflector element for reflecting the light rays in advance ofthe casing rotatable upon the casing around the axis of the projectedbeam, and a holder for a data sheet connected with the reflector elementfor rotation therewith and movement relative thereto adapted to supportthe sheet in spaced relation to the reflector and in position to beilluminated by the light source.

9. An operating lamp, comprising a casing adapted to support a lightsource, said casing having an annular guideway formed thereon, areflector adjacent one end of the casing for projecting the light raysin advance thereof, means within the casing arranged to travel upon saidannular guideway adapted to support the reflector for rotation todifferent positions, and a data sheet holder connected with and movablerelative to the reflector for supporting the sheet at different angularpositions relative to the light source.

10. An operating lamp, comprising means for supporting a light sourcehaving a channel shaped guideway formed thereon and provided with anannular bearing adjacent the guideway, a reflector rotatably seated uponsaid bearing adapted to receive and project the light rays of said lightsource in advance of said means, means mounted for rotation within saidchannel shaped guideway adapted to hold the reflector upon said bearing,and light control means carried by and adapted to rotate with thereflector.

11. An operating lamp, comprising a casing having an annular guidewayformed thereon, a light transmitting element spaced from said casinginadvance thereof, devices rotatably seated upon said annular guidewayand having forwardly extending members detachably receiving andsupporting said light transmitting element, and a reflector connectedwith the devices in rear of the light transmitting element for rotationtherewith and adapted to receive certain of the rays of the light sourceand to project them in advance of the light transmitting element outsideand independently thereof.

12. An operating lamp, comprising a casing having an annular guidewayformed thereon, a reflector element adjacent said casing having innerand outer concentrically arranged reflecting surfaces separated by anannular wall portion, devices rotatably seated upon said annularguideway and connected with said wall portion whereby the reflector issupported for rotation about the longitudinal axis of the casing, lightcontrol means secured upon and rotatable with the reflector, a lighttransmitting element spaced from the reflector element in front of theinner reflecting surface thereof, parts extending from said devices andsupporting said light transmitting element,a lamp socket within thecasing, and a lamp carried by said socket and extending between thelight transmitting and reflector elements, certain ofthe lamp rays beingreceived by the outer reflecting surface of the reflector elementand'projected thereby in advance of the light 'trans rritting elementoutside and independently thereof.

13. An operating lamp, comprising a casing, a lamp socket ,within thecasing, a rod for supporting the socket extending through the wall ofthe casing and provided adjacent its inner end with a shoulder, a sleeveon the rod within the casing having one end engaging the "inner face ofsaid wall and the other engaging said shoulder, an operating handle forthe lamp recessed to receive the outer end of theqrod and seated uponthe outer face of said wall, and a screw extending within the handle andthreaded within the outer end of the rod whereby the sleeve and handleare clamped upon said casing wall to rigidly support the lamp socket andlamp within the casing.

14. An operating lamp, comprising a support having an annular portionthereon, a lamp carried by the support and projecting in advance of saidannular portion, a light reflector rotatably mounted upon said annularportion and having a light reflecting surface extending outwardly andlaterally from said annular portion for projecting the light rays inadvance of the annular portion of the support, and light control meansextending from the reflector in advance thereof and rotatable therewith.

15.'An operating lamp, comprising a support having an annular portionthereon, a light source carried by the support a light reflectorrotatably mounted upon said annular portion and having a lightreflecting surface extending outwardly and laterally from said annularportion for projecting the light rays in advance of the annu-. larportion of the support, an eye shield on the reflector extending inadvance thereof, and a light transmitting element supported in front ofsaid light source and having its rear portion spaced from the reflectorto afford an opening for the passage of the light rays to the reflector.

16. An operating lamp, comprising a support, a reflector mounted uponthe support, means for supporting a light source in advance of thereflector, a light transmitting element supported in front of the lightsource and having its rear portion spaced from the reflector to affordan opening for the passage of the light rays to the reflector, and meansextending in advance of the reflector and forming a holder for a datasheet and adapted to support the sheet in position to be illuminated bythe light rays emanating from the light source.

17. An operating lamp, comprising a casing having an annular bearingformed on its wall, a reflector rotatably supported on said bearing andextending in advance of the casing, supporting means within the casing,a lamp carried by the supporting means and extending in advance of thecasing, the reflector being adapted to receive the lamp rays and toproject them forwardly of the casing, an eye shield connected with andextending in advance of the reflector and rotatable therewith about theaxis of the lamp, and a data sheet holder secured on the eye shieldadapted to support the sheet in position to be illuminated by the lightrays emanating from the lamp.

13. An operating lamp, comprising a casing having an annular bearingformed on its wall, a reflector rotatably supported on said bearing andextending in advance of the casing, supporting means within the casing,a lamp carried by the supporting means and extending in advance of thecasing, and means extending in ad- Vance of the reflector and forming aholder for a data sheet movable to support the sheet in relativelydifferent positions upon the reflector.

19. An operating lamp comprising a casingadapted to support a lightsource, a' reflector element connected with the casing and having a re-vflecting portion adapted for the projection of light rays emanating fromthe light source, an eye shield secured upon and extending from thereflector, and a data sheet holder movable to different positions uponthe eye shield in one of Y which it is adapted to support the sheet inad..

Vance of the reflector and in position to be illuminated by the lightsource.

ALPI-IONSE F. PIEPER.

